C0524Multi-axis Acceleration Sensor Module B Correlation
- Generic OBD-II code · Chassis
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Module B's readings disagree with another source for the same motion, most likely module A or values computed from steering angle and wheel speeds. No manufacturer publishes C0524; Audi documents only the A counterpart. A Bosch patent places two sensor devices on opposite sides of the car and treats yaw rate as measured twice, directly and via the centrifugal accelerations at each spot, so a control unit can spot a device giving falsified data. A Hyundai/Kia design moves the yaw and g sensors into the airbag unit and sends them over CAN to the stability controller, a layout where the airbag and brake systems can each hold a set. Which side is wrong is left to further testing.
- What you may notice
- ESC or assistance warning message
- Stability or assistance functions limited
- Likely causes
- PossibleModule A or B rotated on its mount after repair or impact
- PossibleDrifting sensor in one of the two modules
- PossibleSoftware or timing fault in the comparing controller
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.